Quebrada del Patincho, Finca Montealegre: Burdigalian, Costa Rica
collected by A. Segura
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Nautilida
- Aturiidae
|
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| Laurito and Mora 2018 | |||||||
| see common names | |||||||
Geography
| Country: | Costa Rica |
| Coordinates: | 10.0° North, 83.6° West (view map) |
| Paleocoordinates: | 12.4° North, 80.3° West (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Burdigalian | ||
| Age range of interval: | 20.45 - 15.98 m.y. ago |
Stratigraphy
| Formation: | Río Banano | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The area of the Río Reventazón valley between Peralta and just south of the confluence with the Río Bonilla, including the locality, is mapped as "Formation A" of Branson (1928), which he thought could be correlative with the Uscari Formation (Van den Bold, 1967), and included in the Uscari Formation in Malavassi's (1961) Peralta-Pascua section. Cassell (1986) dated the Uscari Formation at Peralta, based on the overlap of Catapsydrax stainforthi, Globorotalia fohsi peripheroronda, Globigerinoides trilobus trilobus, and Globoquadrina altispira, the Río Reventazón section is placed in the Early Miocene, Catapsydrax stainforthi Zone to Globigerinatella insueta Zone, N6 to N7. However, those ages come from a 25 m-thick section at Peralta, 3 km southwest of the fossil site. Other parts of the Uscari Formation range to the early middle Miocene (Langhian), zones N9 to N10, Globorotalia fohsi peripheroronda zone to Globorotalia rohsi fohsi Zone. Van den Bold (1967) reported lower Globorotalia barisanensis Zone or upper Globigerinatella insueta Zone (upper N8 to lower N9) stratigraphically higher than the fossil locality in the Río Reventazón section. Laurito & Mora (2018) argued that this site belongs to the Lower-Middle Miocene Río Banano Formation, based on the map of Fernández (1987). | |||||
Lithology and environment
| Primary lithology: | gray lithified calcareous sandstone |
| Lithology description: Light gray calcareous sandstone | |
| Environment: | shoreface |
| Geology comments: Cassell (1986) inferred that the Rio Banano sandstones were deposited on the inner continental shelf at a depth of about 10 to 20 meters, on the basis of benthic foraminifera found in high energy, nearshore environments. | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | SUI |
| Collectors: | A. Segura |
Metadata
| Database number: | 203166 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2019-08-02 22:30:30 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2019-08-02 22:30:30 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 27004. | A. K. Miller, W. M. Furnish, and A. Segura Paguaga. 1955. Aturias from Costa Rica. Journal of Paleontology 29(3):465-466 [A. Hendy/A. Hendy] |
Secondary references:
| 69675 | C. A. Laurito and M. J. Mora. 2018. Nuevo registro fósil de Aturia cubaensis (Lea, 1841) [Cephalopoda, Nautilidae] para el Mioceno inferior - medio de Costa Rica. Revista Geológica de América Central 58:171-178 [M. Clapham/M. Clapham] |